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Soil Protection and Contaminated Sites Rehabilitation Policy
APPENDIX 2 / Generic criteria for soils and groundwaterTable 1: Grid of generic criteria for soils
Criteria indicating soil contamination have not been published or established for all existing parameters. The list provided is neither exhaustive nor restrictive. The user must report all parameters detected, even if the present grid does not at present provide any criteria for them. If the analytical method quantification limit is above the criterion value (as in the case for 2,6-dinitro-toluene), this quantification limit will be tolerated as the threshold to be complied with. The criterion however remains the objective to attain. In the case of metal and metalloids, the natural background levels of a soil might exceed the generic criterion used. If properly assessed and documented, this background level will be used instead of the generic criterion set to assess the level of contamination, unless a real impact or health risk has been detected. : No criterion available at present. 1 : Contaminant mobility is particularly influenced by soil pH. The fact that a pH less than 5 or greater than 9 will increase the mobility of the contaminant (metals in particular) must therefore be taken into consideration. This situation may increase the environmental impacts, and must therefore be reported to the Ministère.2 : The A criteria represent background levels for inorganic substances and quantification limits for organic materials. In the case of metals and metalloids, the background levels given in Table 1 prevail for the St. Lawrence Lowlands Geological Province. For the other Geological Provinces, metal and metalloid background levels to be used are presented in Table 2. A map of the Geological Provinces accompanies Table 2.3 : Criteria validated by a human health protection approach (risk assessment carried out on the basis of generic scenarios according to use) by the MEF Service d’Analyse de Risque [Risk analysis service] (later called the Groupe d’Analyse de Risque [Risk analysis group]), in co-operation with the Service des Lieux Contaminés [Contaminated sites service], as requested by regional directorates. It must be kept in mind that these values have not been calculated to take into account risk to the ecosystem. When values appear high (for example in the case of the C criterion for dibutyl phthalate), it is appropriate to verify whether application of a public health-based criteria also protects the ecosystem.If the analytical method quantification limit is above the criterion value (as is the case for 2,6-dinitrotoluene), this quantification limit will be tolerated as a threshold to be complied with. The criterion however remains the objective to attain. 4 : Amended on February 19, 1991.5 : When the criterion for soil sulphur is exceeded, a test for acid generation potential should be carried out as a basis for soil management decisions. Consult the MENV regional office for details.6 : Criteria established during a literature search carried out by the SLC at the request of the regional departments. These data may originate from various sources and so may have been developed using different methodologies.7 : The criterion prevails for each compound present. The compounds to analyse are methyl-1-naphtalene, methyl-2-naphtalene, dimethyl 1-3 naphtalene and trimethyl-2,3,5 naphtalene.8 : The congeners targeted are those identified by the committee on the PCB problem of the MEF’s Laboratories Directorate (today the Centre d’expertise en analyse environnementale du Québec [Québec Environmental Analysis Centre]). For details, consult the "Guide de caractérisation des échantillons contaminés par des biphényles polychlorés" Direction des laboratoires, MEF, 1996.12.039 : Values are to be established later for different specific pesticides. The pesticides targeted are those listed in the Criteria Grid Applicable to Cases of Groundwater Contamination.10 : In effect since January 1, 1996 replacing the "mineral oils and greases" in the soil method.11: The criteria applies to total benzo(b)fluoranthene, benzo(j) fluoranthene and benzo(k)fluoranthene. If it is possible to separate benzo(k)fluoranthene from benzo(b+j) fluoranthene, the 1 ppm value for the B criteria or 10 ppm value for the C criteria applie to each of them. If it is possible to dose separately the benzo(b) fluoranthene, benzo(j) fluoranthene and benzo(k)fluoranthene, the 1ppm value for the B criteria or 10 pppm value for C criteria applies to each of them. 12 : For dioxins and furans, it is not possible to set up a quantification limit based on toxic equivalents. A quantification limit specific to each dioxin and furan congeners must be used instead. Those values are :
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